A 6-inch-wide rectangle is rotated 90 degrees about one of its corners, sweeping out an area of 45 \pi square inches, excluding the area enclosed by the rectangle in its starting position. Find the rectangle’s length in inches.
A 6-inch-wide rectangle is rotated 90 degrees about one of its corners, sweeping out an area of 45 \pi square inches, excluding the area enclosed by the rectangle in its starting position. Find the rectangle’s length in inches.